ohnstrano



. E. OHNSTRANDQ FvR RESISTANT CABINET. FILED JAN. 28, 1922.

Ian. 23, 1923.

' 1770627 Enoch 01am I by w cam 'fiid' aim fireTegistant ,cgibiuet s 1 a thepr enceo 30 Objects of the Patemg dg gii;

' ENOCII-I- OI-INSTRANQflQE:MOHAKV CAMBRIDGE; mhesgx Tb fdllalbhovu may 00 Be it knownthat I, ENOQ a :cltizen of the heat 'insulat-in and. inner metalli steam. When, this outer; easing an I ilifla m bile fgas is produced 5 i 1 e yi nsiderable jqu e ty H I bulge the casings whlch edhfihe at l lf e il e'c nt i t since a disruptiouof th by pressureqnexifl 'the destruction 9f thegc and water.

bulging and *dispul casings of fire IGSiSijiL a ready meahs of eseap Within said casings; to cpgr'esfer'v "appearai1ceef: subl Cabin V ,40 the space betweenjt h ing in the ends thereof pluge of -r I concealing necessary openihgs the i g ne lto'ie i pmvl e q "character l? f {L The invention; cqm pr ls'es p softfmetalas lead, er a, fusible 2110' In order toilluetrate "the iuyeiitien one fusible material L such as Wax, ar of so comprise holes 0 through the face of the door as indicated in Fig. 1. These holes preferably connect directly with the upper iorizontal portion of air space. These openings. being more conspicuous than the openings in the door of the safe, are closed with plugs P of lead or other readily fusible metallic alloy in order to take the fine finish of the front of the safe without chipping,

denting or cracking.

In case a safe provided with air spaces and vents as herein described. is subject to great heat, plugs 41 and P will fuse, providing a ready and easy means of escape for any gases which may form between the safe casings. Since these air spaces or ducts lie within the body of the heat insulating material, they cannot be rendered inoperative by inward buckling of the outer casing of the safe.

For the purpose of venting the space filled or artly filled by the heat insulating material it is immaterial whether the vent passages or channels are made in the insulating material itself or in one or both of the casin 's of heat conducting material. such as meta which define the space. Thus the receptacle may be considered as having walls ascomposed of alternate layers of heat conducting and heat insulating material with channels inone or more of the layers to vent theinterior of the walls. The chan nels, however, are preferably formed in the insulatin material, since to make them in the meta casings would tend to weaken the resistance of the receptacle to shocks and blows due to falls and'explosions.

I claim;

1. A fire-resistant cabinet having inner and outer casings, heat insulating material between said casings of a kind which-generates gas when heated, and means for venting the portion of the cabinet between said casings to the exterior of the cabinet in order to relieve the pressure due to the formation of gas from said material, whereby deformation of the cabinet by interior gas pressure is avoided in case of fire.

2. A fire-resistant cabinet having innerand outer casings, heat insulating material between said casings leaving a space unfilled adjacent one of said casings, said insulating material being of a kind which generates gas when heated, and means for venting said unfilled space to the exterior of the cabinet to relieve the pressure due to the formation of gas from said material thereby to avoid deformation of the cabinet by interior gas pressure in case of fire.

3. A fire-resistant cabinet comprising adjacent layers of heat conducting and heat insulating materials, said heat insulating materials being of a kind which generates gas when heated, channels formed 1n one of said layers wherein the gas may gather, and means for venting said channels to the exterior of the cabinet, whereby deformation of the cabinet by interior gas pressure is avoided in case of fire.

4. A fire-resistant cabinet having inner and outer casings, heat insulating material between said casings, leaving a space unfilled adjacent one of said casings, said insulating material being of a kind which nerates gas when heated, a vent extendi ng from said unfilled space through said outer casing, and a fusible lug in said vent, whereby deformation of the cabinet b interior gas pressure is avoided in case 0 fire.

'5. A fire-resistant cabinet having inner and outer casings, heat insulating material between said casings, said material being of a kind adapted to generate gas when heated, a channel in said material adjacent one of said casings, and a vent extending from said channel through said outer casing, whereby deformation of the cabinet b terior gas'pressure is avoided in case 0 fire.

6. A fire-resistant cabinet having inner and outer casings, heat insulating material between said casings, said material being of a kind adapted to generate gas when heated, a channel in said material, a vent extending from said channel through said outer casing, and a fusible metal plug in said vent, whereby deformation of the cabinet b in terior gas pressure is avoided in case 0 fire.

7. A fire-resistant cabinet comprising adjacent layers of heat conducting and heat insulating material, said heat insulating material being of a kind adapted to generate gas when heated, channels formed in certain of said layers, vents for said channels, and fusible means normally closing said vents, whereby deformation of the cabinet by interior gas pressure is avoided in case of fire.

Signed by me at Mohawk, N. Y., this 24th day of January, 1922.

ENOCH ()HNSTRAND. 

